1, with the left hand representing ten digits and the right hand representing single digits.
2. Fingers other than the thumb are called "group fingers", and each "group finger" represents the number 1.
2. The fist clenched in the right hand represents the number 0.
3. The number 1 is indicated by the "group finger" stretched out by the right hand.
4. The right hand stretches out 2, 3 and 4 "group fingers", representing the numbers 2, 3 and 4 respectively.
5. The thumb represents the number 5.
6. The thumb of the right hand, plus 1, 2, 3 "group finger", represents the numbers 6, 7, 8.
6. The five fingers of the right hand open to represent the number 9.
7. The left hand stretches out a "group finger", and the right hand makes a fist to indicate the number 10.
8. The left hand holds out a "ball finger" and the right hand holds out a thumb to indicate the number 15.
9. The left hand holds out three "fingers", and the five fingers of the right hand open to indicate the number 39.
10, the number 99 indicates that the fingers of the left and right hands are open.
1 1, and the number 100 indicates that both hands are clenched.